State has a Far Right as Practicable Requirement

A bicyclist riding slower than traffic must stay near the right side of the roadway, except when turning left, avoiding a hazard, sharing a lane too narrow to share safely, or riding on a one-way street.

Allows Two Abreast Riding

Missouri allows bicyclists to ride two abreast as long as they are not impeding other traffic.

Single File is Required

Because riding abreast is affirmatively allowed when not impeding traffic, Missouri does not require single-file riding.

Has a Safe Passing Law

Missouri requires a motorist overtaking a bicyclist to leave a "safe distance" and maintain it until past, but state law does not define that distance in feet; it is judged case by case.

Helmets are required on the road

No statewide bicycle helmet requirement appears in §§ 307.180-307.194; helmet ordinances for minors exist only at the local level (e.g., some cities require them for riders under 16 or 17).

If Bike Lanes are present, they are required ( except when unsafe )

Missouri's bicycle statutes permit riding on a shoulder or bike lane but do not require a bicyclist to use one when provided.

Riders may use the sidewalks

Missouri's bicycle statutes do not address sidewalk riding; it is left entirely to local ordinance, which may permit, restrict, or prohibit it depending on the municipality.

Does the Impeding Statute Apply to Bikes

Missouri's impeding-traffic statute applies only to motor vehicles by its own terms; it does not reach bicyclists. Missouri goes further than most states: a pedal bicycle is not a "vehicle" at all under the code's definitions, and the separate statute that gives cyclists the duties of a vehicle driver reaches only rules written for a vehicle.

Whether cyclists may treat stop signs as yield signs (the "Idaho stop").

Missouri has no general law letting bicyclists treat stop signs as yields. A narrow statewide exception lets a cyclist proceed through a red light only if the signal has stopped after a stop and apparently cannot detect the bicycle. A 2026 Jefferson City ordinance adopting a broader "Idaho stop" is local, not statewide.

Restrictions exist on e-bikes and usage

Missouri classifies electric bicycles into three classes, requires manufacturer labeling of class/speed/wattage, and bars riders under 16 from operating a class 3 e-bike.

Allows the concept of Contributory Negligence that allows any contributory fault resuls in 'no fault'

Missouri abolished contributory negligence as a complete bar to recovery in Gustafson v. Benda (1983), adopting pure comparative fault: a claimant's damages are reduced by their percentage of fault but are never entirely barred, regardless of how large that percentage is.